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Lock process when copying fields from process structure so as to

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get a consistent snapshot, as well as get consistent values (i.e.,
that p_comm is properly nul-terminated).

Perforce CID:	98824
Obtained from:	TrustedBSD Project
This commit is contained in:
Robert Watson 2006-06-08 21:58:04 +00:00
parent ec914adf6b
commit dcd57cfcba
1 changed files with 2 additions and 3 deletions
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5
sys/security/audit/audit.c
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@ -171,20 +171,19 @@ audit_record_ctor(void *mem, int size, void *arg, int flags)
/*
* Export the subject credential.
*
* XXXAUDIT: td_ucred access is OK without proc lock, but some other
* fields here may require the proc lock.
*/
cru2x(td->td_ucred, &ar->k_ar.ar_subj_cred);
ar->k_ar.ar_subj_ruid = td->td_ucred->cr_ruid;
ar->k_ar.ar_subj_rgid = td->td_ucred->cr_rgid;
ar->k_ar.ar_subj_egid = td->td_ucred->cr_groups[0];
PROC_LOCK(td->td_proc);
ar->k_ar.ar_subj_auid = td->td_proc->p_au->ai_auid;
ar->k_ar.ar_subj_asid = td->td_proc->p_au->ai_asid;
ar->k_ar.ar_subj_pid = td->td_proc->p_pid;
ar->k_ar.ar_subj_amask = td->td_proc->p_au->ai_mask;
ar->k_ar.ar_subj_term = td->td_proc->p_au->ai_termid;
bcopy(td->td_proc->p_comm, ar->k_ar.ar_subj_comm, MAXCOMLEN);
PROC_UNLOCK(td->td_proc);
return (0);
}